FDLL300 Equivalent & Substitute Parts

Part Overview

The FDLL300 is a general-purpose rectifier diode rated for 125 V DC reverse voltage with 200 mA average rectified current in a surface mount SOD-80 package. This component is classified as obsolete, which necessitates identification of active equivalent parts for ongoing design support and procurement continuity. The FDLL300A serves as the direct parametric equivalent, offering identical electrical specifications with active product status.

Substiute Parts

FDLL300

onsemiIn Stock: 2163FDLL300 Datasheet

Current PartRFQ

FDLL300A

onsemiIn Stock: 2499FDLL300A Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the FDLL300 is determined by strict equivalence across all electrical and mechanical parameters. The substitute part must satisfy the following criteria:

• Voltage - DC Reverse (Vr) (Max): 125 V
• Current - Average Rectified (Io): 200 mA
• Voltage - Forward (Vf) (Max) @ If: 1 V @ 200 mA
• Current - Reverse Leakage @ Vr: 1 nA @ 125 V
• Capacitance @ Vr, F: 6 pF @ 0V, 1MHz
• Operating Temperature - Junction (Max): 175°C
• Package / Case: DO-213AC, MINI-MELF, SOD-80
• Mounting Type: Surface Mount
• Technology: Standard
• Speed Classification: Small Signal ≤ 200mA (Io), Any Speed

The FDLL300A meets all specified parameters and is classified as an active product, making it suitable for direct substitution in applications currently using the obsolete FDLL300.

Parameter Comparison

Engineering Selection Recommendations

The FDLL300A is the appropriate substitute for the obsolete FDLL300. Both parts are manufactured by onsemi and exhibit identical electrical and mechanical specifications across all critical parameters. The FDLL300A carries active product status, ensuring long-term availability and supply chain continuity.

The FDLL300A provides enhanced compliance documentation, including explicit ROHS3 certification, while maintaining all other regulatory and environmental attributes of the original part. Both components share identical moisture sensitivity classification (MSL 1), REACH status, export classification (EAR99), and tariff coding (HTSUS 8541.10.0070).

Direct substitution of FDLL300A for FDLL300 requires no circuit modifications, PCB layout changes, or thermal management adjustments, as all electrical performance characteristics and package dimensions remain equivalent.

Frequently Asked Questions (FAQ)

Q: Can FDLL300A be used as a direct replacement for FDLL300 in existing designs?

A: Yes. The FDLL300A is a parametric equivalent with identical voltage rating (125 V), current rating (200 mA), forward voltage drop (1 V @ 200 mA), reverse leakage current (1 nA @ 125 V), and package configuration (SOD-80 surface mount). No design modifications are required.

Q: What is the primary difference between FDLL300 and FDLL300A?

A: The FDLL300 is classified as obsolete, while FDLL300A maintains active product status. The FDLL300A also includes explicit ROHS3 compliance certification. All electrical and mechanical specifications are identical.

Q: Are there any package or footprint differences between these parts?

A: No. Both parts use the DO-213AC, MINI-MELF, SOD-80 package configuration. PCB footprints and assembly processes remain unchanged.

Q: What is the moisture sensitivity level for both parts?

A: Both FDLL300 and FDLL300A are classified as MSL 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling.

Q: Are both parts compliant with environmental regulations?

A: Yes. Both parts maintain REACH Unaffected status and are classified under ECCN EAR99 for export purposes. The FDLL300A includes explicit ROHS3 compliance documentation.

Q: What is the maximum junction temperature for these diodes?

A: Both parts are rated for a maximum junction temperature of 175°C.

Q: Can these parts be used interchangeably in high-frequency applications?

A: Both parts are classified as small signal diodes with speed rating "Any Speed" for currents ≤ 200 mA. Frequency performance is equivalent between the two parts.